package grammartest;

public class OutterClass {

    int numberLength; // <== not *final*

    class PhoneNumber {

        PhoneNumber(String phoneNumber) {
            numberLength = 7;   // <== assignment to numberLength

        }


    }

    public static void main(String[] args) {
        byte a = 1;
        byte b = 2;

        byte c = (byte) (a + b);
        new OutterClass().new PhoneNumber("s");
    }


}
